Which of the following describes the relationship between length and tension?
Which of the following describes the relationship between length and tension?
As the muscle's resting length increases, the active force will increase.
As the muscle's resting length increases, the active force will decrease.
The active force can increase or decrease, depending on the starting resting length of the muscle.
As the muscle's resting length decreases, the active force will decrease.
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Part B
Why does the active force of skeletal muscle change with the muscle's resting length?
Why does the active force of skeletal muscle change with the muscle's resting length?
The amount of available calcium varies.
The amount of available ATP varies.
The amount of resistance varies.
The number of cross-bridges between actin and myosin varies.
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Part C
Which starting length of the muscle provided the maximum total force?
Which starting length of the muscle provided the maximum total force?
the longest starting length
the shortest starting length
The length of the muscle did not affect the amount of total force produced.
an intermediate starting length
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Part D
At which muscle length was the passive force the greatest?
At which muscle length was the passive force the greatest?
70 mm
100 mm
80 mm
90 mm
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